• Beach nourishment efforts begin again as U.S. Army Corps of Engineers use BIL funds for Indiana Shoreline Protection Project.

    The Indiana shoreline near Mount Baldy dune is receiving sand again this year to help counteract shoreline erosion. The design and construction supervision are managed by the U.S. Army Corps of Engineers (USACE), Chicago District and has been done for seven of the last ten years. The project is dependent on the availability of beach nourishment government funds. This year, over $2.7M of the Bipartisan Infrastructure Law (BIL) funds are being used to complete the project.
  • USACE awards contract for Utqiagvik coastal erosion project

    Brice Civil Constructors Inc. of Anchorage, Alaska, will begin constructing a portion of the structure in Utqiagvik aimed at reducing erosion and the risk of storm damage to about five miles of coastline. This first effort will construct a revetment in front of the downtown area. Future work for the entire project consists of more rock revetments, a protective berm as well as raising and armoring Stevenson Street.
  • Modified Central City Project receives $20M in FY 2024 Work Plan

    The U.S. Army Corps of Engineers delivered its Fiscal Year 2024 Work Plan for the Army Civil Works program to Congress, and the Fort Worth District’s Modified Central City project received an additional $20M to continue the design of the project.
  • Snow-Impacted National Inventory of Dams by GAGESII Watershed

    Abstract: This Engineering Research and Development Center (ERDC) Technical Note describes the development of a set of locations within the contiguous United States (CONUS) where snowmelt is a component of the annual streamflow. The locations are selected from the US Geological Survey (USGS) Geospatial Attributes of Gages for Evaluating Streamflow II (GAGESII) and National Inventory of Dams (NID) data sets. The 30-year normal snow regimes were used to identify all GAGESII watersheds that have any of the basin delineated as transitional (rain/snow), snow dominated, or perennial snow zones. NID dams that are within snow affected GAGESII watersheds are included in the data set. The purpose of this ERDC Technical Note is to describe the development of a comprehensive data set of CONUS GAGESII and dam infrastructure affected by snow changing regimes.
  • Low Sill Control Structure: Physical Modeling Investigation of Velocities Downstream of the End Sill

    Abstract: The model investigation reported herein describes the process to measure velocities at various locations downstream of the Low Sill Control Structure using an existing 1:55 Froude-scaled physical model. To collect these measurements, an acoustic-Doppler velocimeter was deployed downstream of the structure at varying locations and depths. A total of 79 velocity measurements were taken across nine flow conditions (discharge, head and tailwater elevations, and gate openings) provided by the US Army Corps of Engineers, New Orleans District.
  • Blasting and drilling to begin soon at the Kilohana temporary housing site

    KIHEI, Hawai‘i – The U.S. Army Corps of Engineers and its contractors will begin heavy construction
  • USACE, Air Force break ground on B-21 weapons generation facility

    ELLSWORTH AIR FORCE BASE, S.D.— Members of the U.S. Army Corps of Engineers, Omaha District’s Rapid City, South Dakota resident team, along with airmen from Ellsworth Air Force Base recently broke ground on a new B-21 weapons generation facility under clear, blue skies April 29.
  • Corps of Engineers partners with Owámniyomni Okhódayapi and the city of Minneapolis for park and recreational purposes at Upper St. Anthony Falls Lock and Dam

    The U.S. Army Corps of Engineers, St. Paul District, and Owámniyomni Okhódayapi, formerly known as Friends of the Falls, along with the city of Minneapolis, began a new partnership for park and recreational purposes at Upper St. Anthony Falls Lock and Dam located in Minneapolis, in March.
  • Properties and Mechanisms for PFAS Adsorption to Aqueous Clay and Humic Soil Components

    Abstract: The proliferation of poly- and perfluorinated alkyl substances (PFASs) has resulted in global concerns over contamination and bioaccumulation. PFAS compounds tend to remain in the environment indefinitely, and research is needed to elucidate the ultimate fate of these molecules. We have investigated the model humic substance and model clay surfaces as a potential environmental sink for the adsorption and retention of three representative PFAS molecules with varying chain length and head groups. Utilizing molecular dynamics simulation, we quantify the ability of pyrophyllite and the humic substance to favorably adsorb these PFAS molecules from aqueous solution. We have observed that the hydrophobic nature of the pyrophyllite surface makes the material well suited for the sorption of medium- and long-tail PFAS moieties. Similarly, we find a preference for the formation of a monolayer on the surface for long-chain PFAS molecules at high concentration. Furthermore, we discussed trends in the adsorption mechanisms for the fate and transport of these compounds, as well as potential approaches for their environmental remediation.
  • Morrahs Boat Ramp temporarily closed

    Clarks Hill, SC. – The U.S. Army Corps of Engineers, Savannah District, J. Strom Thurmond Lake announces a temporary closure of Morrahs Boat Ramp. The temporary closure dates are below: